I need information on selecting and installing a wood burning oven for a commercial kitchen

SOURCE: my stoves oven is burning my kitchen cupboards

If you could provide some more information, then I may be able to help. What part of the oven is causing the problem, i.e. top or bottom door. If the doors don't shut properly then this may cause the hot air to escape. If it is one of the doors, is it sitting square in the frame?